Electric Car Charging Cost Calculator by State
Find out what charging an electric car at home costs where you live, and compare it with a gasoline car if you want to.
Sample numbers only, to show how it works. Replace them with yours.
Enter a value for kWh per 100 miles (the EPA label of the car shows it), or fill in miles per kWh.
This is an estimate, not a professional calculation. See the disclaimer and the methodology.
How it is calculated
Electricity used = miles driven ÷ 100 × kWh per 100 miles. Cost = electricity used × price per kWh. The cost per 100 miles is the kWh per 100 miles times the price, and the cost per month is the yearly cost divided by 12.
The kWh per 100 miles figure is the one on the EPA fuel economy label of an electric vehicle. Fueleconomy.gov says electricity use for these vehicles is measured from the charge source, so the figure already includes the small amount lost while charging. You do not add a charging loss on top.
If you know your car in miles per kWh instead, divide 100 by it to get kWh per 100 miles. The optional field does that for you.
The price starts at the 2024 average residential price EIA reports for the state you pick, an annual average that suits a yearly cost better than a single month. It is only a starting point. If your utility has an off-peak or electric vehicle rate and you charge at those hours, enter that price instead.
Miles start at 15,000 a year, which is the mileage EPA uses for the annual fuel cost on its electric vehicle label. It is an assumption for label estimates and not a measure of how much people drive. Enter your own.
The optional comparison uses the gasoline price and the miles per gallon that you type in. No gasoline price is filled in for you: gasoline prices change every week and we have no verified source to start from.
The result covers home charging at one flat price. It leaves out public charging, which sets its own prices, time-of-use rates, fixed charges, the cost of a home charger and any change in your usage with the weather.
Worked examples
At the U.S. average price (2024)
Take a car that uses 30 kWh per 100 miles (an assumed value for this example) driven 15,000 miles a year. It uses 4,500 kWh. At the U.S. average of 16.5 cents per kWh that costs $742 a year, $62 a month and $4.94 per 100 miles.
The same car in the cheapest and the most expensive state
With the same 30 kWh per 100 miles and 15,000 miles, North Dakota (11.5 cents per kWh, 2024) gives $518 a year. Hawaii (42.9 cents) gives $1,929. The car is the same; only the price changes.
Compared with a gasoline car
Suppose a gasoline car gets 30 miles per gallon and gasoline costs $3.50 a gallon (both assumed for this example). 15,000 miles take 500 gallons, $1,750 a year. The electric car at the U.S. average price costs $742, so it comes out $1,008 lower. Use your own gasoline price and mpg.
Starting from miles per kWh
A car that goes 4 miles on each kWh uses 25 kWh per 100 miles (100 ÷ 4). Enter 4 in the miles per kWh field and the kWh per 100 miles field fills itself.
What changes the cost of charging
- The price per kWh. It is the biggest difference between states and between rate plans. An off-peak or electric vehicle rate can lower it if you charge at those hours.
- How much electricity the car uses per 100 miles. Larger and heavier vehicles use more. Compare cars on this number and not only on range.
- How far you drive. The yearly cost grows in a straight line with miles.
- Where you charge. Public chargers set their own prices. This calculator covers home charging only.
- Driving and weather. The label figure comes from standard tests. Your real use per 100 miles can be higher or lower.
Common mistakes
- Using miles per kWh where kWh per 100 miles goes. They are opposites: a higher miles per kWh means less electricity used. Use the optional field to convert.
- Typing cents in the dollar field. 16 cents is $0.16. The price field rejects values above $5 per kWh for that reason.
- Adding a charging loss to the label figure. Fueleconomy.gov says the figure is measured from the charge source, so the loss is already in it.
- Comparing with a gasoline price from another week or place. Enter the price you actually pay.
Cost to charge at home by state (2024)
The table applies each state's 2024 average residential price to an example car that uses 30 kWh per 100 miles (an assumed value for illustration), driven 15,000 miles a year. Scale it to your own car: a car that uses more or less electricity moves every cost in the same proportion. These are annual averages of all residential customers, not your rate.
| State | Average price | Cost per 100 miles | Cost per year (15,000 miles) |
|---|---|---|---|
| Alabama | 15.18 cents | $4.55 | $683 |
| Alaska | 24.82 cents | $7.45 | $1,117 |
| Arizona | 14.91 cents | $4.47 | $671 |
| Arkansas | 12.32 cents | $3.70 | $554 |
| California | 31.97 cents | $9.59 | $1,439 |
| Colorado | 14.92 cents | $4.48 | $671 |
| Connecticut | 28.75 cents | $8.63 | $1,294 |
| Delaware | 16.57 cents | $4.97 | $746 |
| District of Columbia | 17.71 cents | $5.31 | $797 |
| Florida | 14.14 cents | $4.24 | $636 |
| Georgia | 14.08 cents | $4.22 | $634 |
| Hawaii | 42.86 cents | $12.86 | $1,929 |
| Idaho | 11.52 cents | $3.46 | $518 |
| Illinois | 15.87 cents | $4.76 | $714 |
| Indiana | 14.77 cents | $4.43 | $665 |
| Iowa | 13.4 cents | $4.02 | $603 |
| Kansas | 14.15 cents | $4.25 | $637 |
| Kentucky | 12.79 cents | $3.84 | $576 |
| Louisiana | 11.73 cents | $3.52 | $528 |
| Maine | 24.29 cents | $7.29 | $1,093 |
| Maryland | 17.86 cents | $5.36 | $804 |
| Massachusetts | 29.35 cents | $8.81 | $1,321 |
| Michigan | 19.3 cents | $5.79 | $869 |
| Minnesota | 15.45 cents | $4.64 | $695 |
| Mississippi | 13.39 cents | $4.02 | $603 |
| Missouri | 12.91 cents | $3.87 | $581 |
| Montana | 12.66 cents | $3.80 | $570 |
| Nebraska | 11.53 cents | $3.46 | $519 |
| Nevada | 15 cents | $4.50 | $675 |
| New Hampshire | 23.4 cents | $7.02 | $1,053 |
| New Jersey | 19.34 cents | $5.80 | $870 |
| New Mexico | 14.2 cents | $4.26 | $639 |
| New York | 24.43 cents | $7.33 | $1,099 |
| North Carolina | 14.13 cents | $4.24 | $636 |
| North Dakota | 11.51 cents | $3.45 | $518 |
| Ohio | 15.99 cents | $4.80 | $720 |
| Oklahoma | 12.24 cents | $3.67 | $551 |
| Oregon | 14.7 cents | $4.41 | $662 |
| Pennsylvania | 17.77 cents | $5.33 | $800 |
| Rhode Island | 28.65 cents | $8.59 | $1,289 |
| South Carolina | 14.23 cents | $4.27 | $640 |
| South Dakota | 12.86 cents | $3.86 | $579 |
| Tennessee | 12.42 cents | $3.73 | $559 |
| Texas | 14.94 cents | $4.48 | $672 |
| Utah | 12.22 cents | $3.67 | $550 |
| Vermont | 21.9 cents | $6.57 | $985 |
| Virginia | 14.41 cents | $4.32 | $648 |
| Washington | 11.9 cents | $3.57 | $536 |
| West Virginia | 15.07 cents | $4.52 | $678 |
| Wisconsin | 17.18 cents | $5.15 | $773 |
| Wyoming | 12.47 cents | $3.74 | $561 |
| U.S. total | 16.48 cents | $4.94 | $742 |
Frequently asked questions
How much does it cost to charge an electric car at home?
It is the electricity the car uses times your price per kWh. A car that uses more kWh per 100 miles costs more to run, and so does a state with a higher price. The calculator shows the yearly, monthly and 100-mile cost for your numbers.
Where do I find kWh per 100 miles?
The EPA fuel economy label of an electric vehicle shows it, and fueleconomy.gov lists it for each model. If you only know miles per kWh, divide 100 by that number, or type it in the optional field.
Does the figure include the energy lost while charging?
Yes. According to fueleconomy.gov, electricity use for an electric vehicle is measured from the charge source, so it includes a small amount lost in charging. This calculator does not add another loss.
Why does the calculator start at 15,000 miles?
That is the mileage EPA uses for the annual cost on its electric vehicle label. It is a convention for comparing models, not what the average driver covers. Use the miles you really drive.
Does it include public fast chargers?
No. Public chargers set their own prices, which can be higher or lower than your home rate, and we have no verified data for them. If you charge away from home, estimate the share and price separately.
Can I use my utility's off-peak or electric vehicle rate?
Yes. Some utilities offer a lower price at certain hours. Replace the price per kWh with that rate if you charge during those hours.
Why is the price an annual average and not the latest month?
A yearly cost needs a price for the whole year, and a single month in summer or winter can be far from it. The 2024 figures are the latest full-year state averages we have checked.
Related calculators
Sources and last update
- U.S. Energy Information Administration, 2024 Average Monthly Bill, Residential (average price by state)
- Fueleconomy.gov, Electric Vehicle Label (kWh per 100 miles, 15,000 miles a year)
- Fueleconomy.gov, FAQ (electricity use is measured from the charge source)
- U.S. Energy Information Administration, copyrights and reuse
Last updated: November 3, 2026. See methodology and sources.